Home / 15,299.54-21,112.81-8,585.45

Finding the Fourth Proportional to 15,299.54, 21,112.81 and 8,585.45

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Solution

The fourth proportional to 15,299.54, 21,112.81 and 8,585.45 is: 11,847.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.54 : 21,112.81 = 8,585.45 : x
  2. Step 2: Convert to fraction form
    15,299.54/21,112.81 = 8,585.45/x
  3. Step 3: Cross multiply
    15,299.54x = 21,112.81 × 8,585.45
  4. Step 4: Simplify right side
    15,299.54x = 181,262,974.61
  5. Step 5: Solve for x
    x = 181,262,974.61/15,299.54
  6. Step 6: Final answer
    x = 11,847.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.